Solution:

Sure, no problem. The total bits are 11 bits. Then you just need to adjust the SW1 of ADAM-4520 to 11 bits (1: open, 2 : close). Here're one Windows-based COM port test program. You can using ADAM-4520 and PCL-745B to verify them. Such configuration (11 bit : 9600, E, 7, 2) work properly in my place. Please refer to the attached file for the setting of each field.